While housesitting for Craig and Gina, Eddie takes in a runaway whose life is threatened by her mobster boyfriend. Meanwhile, Trevor enters Baywatch rookie school to become a certified LA County lifeguard.
Several people are murdered at the beach by a mysterious man in ghoulish make-up and Eddie is knocked unconscious by what he describes as a "cretin." Eddie's report is met with skepticism until the identity of the killer is dramatically revealed.
After their plane crashes, two robbers attempt to retrieve their suitcase full of stolen money from the ocean. Meanwhile, Mitch and Gayle go to court over custody of Hobie.
A wealthy older man drowns under suspicious circumstances in front of Jill Riley's tower. Jill endures the pain of losing her first victim, becoming obsessed with unravelling whether his death was an accidental drowning, or murder.
Hobie overhears his divorcing parents arguing and boats away to a deserted island with two friends, only to have their boat drift away, leaving them stranded on the island with modern day pirates!
Eddie must come to terms with his past when he confronts a gang of "surf rats" lead by a former friend from his reform school days. Trevor begins to doubt his lifeguarding skill when his girlfriend almost drowns because of his arrogance.
Leigh takes over at Baywatch while Sean, Jason and Zack go to compete in a 12-mile race of natural obstacles. Jessie's presence at the race creates turmoil. Leigh and Jenna pretend to be lesbian lovers.
Investigating toxic dumping, Sean and Leigh end up chained inside a chamber slowly filling with toxic seawater. Can Sam get them out in time? To raise money, Jason and Zack have to hula dance in grass skirts in front of a lot of women.
Kekoa is devastated when Jessie tells JD that he's the father of her child. A rescued body boarder is paralyzed. Sean has a romantic encounter with a beautiful, woman he thinks might really be Pele, the goddess fire.
Zack corrupts the headquarters' computer system forcing everyone to work in the Dark Ages. Sean is freaked because a major donor is about to arrive in the midst of chaos. Jason saves Brit from her ex.
Jenna invests all her money with an investment banker who turns out to be a con man. Derek Hart is the kind of man JD wishes he was. But when Derek jumps off a cliff, JD and Jason dive in to save his life, in more ways than one!
A hurricane hits Hawaii. Sean and Jenna get trapped in a WWII bunker and must put their hatred aside and work together to escape. Zack is trapped in headquarters with a thrill-seeking reporter that puts their lives in danger to get her story.
Baywatch faces two bizarre lawsuits. Kekoa's father wants her to break up with JD and quit lifeguarding. Zack runs the new Junior Lifeguards program. A government Investigation puts Sean's job, and the future of the Training Center in jeopardy.
Jenna convinces ruthless Councilman McKenna to close the Training Center. Sean suspends Zack after he severely injures JD during a rescue. Kekoa expresses her deep love for JD – but to Leigh! Zack sees a ghostly woman from his dreams.
To avoid jail, Danny joins Team Baywatch. Leigh doesn't trust him. Kekoa battles her father over her lifeguard career and moves out. JD, Zack and Jason hustle two gorgeous women who turn out to be con artists who turn the tables on them.
A plane carrying a donor heart crashes, and it's up to Jason to makes a desperate dive to retrieve the heart before the patient dies. Two hooligans steal a car and end up trapped underwater. Jenna tries to get Leigh to turn against Sean.
Leigh goes hang gliding with Sam Parks, a daredevil pilot who puts her life in danger. Things go horribly wrong when Kekoa's cousin, Nani, parties on a boat with drunken frat boys and ends up alone in the ocean.
Sean and Jenna clash when she tries to close Baywatch so investors can develop the property. Carrie is afraid she's not lifeguard material after her reluctance to jump into the water from a hovering helicopter.
A teenager's waverunner causes accidents and his father threatens to sue Baywatch for not rescuing him ahead of his victims. JD takes out his personal problems on Sean. Zack relentlessly pursues Carrie while she pursues Jason.
Sean clashes with Jenna. A new love triangle emerges between new recruit Zack and rookie hopeful Carrie, who's more interested in Jason. Sean and new lifeguard Leigh Dwyer confront daredevil Cliff, whose dangerous antics disrupt the Baywatch team.